Auxiliary fueling for internal combustion motors



EL). GRABBE' 1,970,425

AUXILIARY FUELiNG FOR INTERNAL COMBUSTION MOTORS Aug. 14, 1934.

Filed Dec. 1, 1952 anvewtoz DIETRICH GRABBE Patented Aug. 14, 1934UNITED STATES PATENT OFFICE AUXILIARY FUELING FOR INTERNAL COM- BUSTIONMOTORS This invention relates to internal combustion engines,particularly to types used in propelling vehicles, aeroplanes, boats andthe like where there are demands for increased or reserve energy.

One of the objects of the invention is to provide a tank in whichcompressed gas may be stored or supplied with means for making gas, andso connected with the carbureter that the contents may be used at willas an additional source of power.

A further feature is in the provision of means of supplying auxiliaryfuel to the motor in such quantities and at such times as may bedesired.

Another purpose is to produce a simple, effective and practical deviceunder the instant control of the operator for increasing the speed andpower of the motor in a novel manner.

These several advantageous objects are attained by the novelconstruction and arrangement of parts hereinafter described and shown inthe accompanying drawing, forming a material part of this disclosure,and in which:

Figure 1 is a side elevational view of a conventional type of motorshowing the application of an embodiment of the invention.

Figure 2 is a sectional view taken on line 2--2 of Figure 1, drawn to anenlarged scale.

Figure .3 is a similarly enlarged sectional view taken on line 33 ofFig. 1.

As seen in the drawing a motor housing, designated generally by thenumeral 10, is supplied with the usual parts which include a carbureter11, manifold 12 and transmission casing 13.

A sectional tube connects the carbureter to the manifold, its lowersection 14 being provided with a shutter or butterfly valve 15controlled by a foot lever 17 to which it is connected by a rod 18 asusual, the rod, in this case being provided with a slot 19.

Carried at any convenient point in the vehicle is a tank 20 having arelief valve 21 and connected by a pipe 22 to a pressure gage 23 fixedon some part of the vehicle, as the dash board 24.

The tank 20 is preferably supplied with calcium carbide and waterwhereby a powerful gas is evolved and retained therein until required,but the tank may also be used for storing any suitable gas undercompression.

Connected to the gage 23 is a needle valve controlling the gas from thetank and leading from the valve is a pipe 26 extending to the inlet of arotary plug valve 27 fixed on the motor housing 10; the valve outlet isengaged by a pipe 28 with the upper section 16 of the tube 14, which itenters as at 29.

The valve 27 has a cylindrical plug 30 held in position by a screw 31engaging in an annular recess 32 at its inner end and is provided with atransverse port 33 controlling the passage through the valve body.

The extending stem of the plug passes through a stufiing box having apacking nut 34 and has fixed on its end a lever 35 in which is set acrank pin 36 engaging in the slot 19 of the connecting rod 18.

From the foregoing it will be apparent that the valve 15 is moved by thefoot lever 17 in the usual manner, but if an excess of power berequired, a full opening of the valve causes the end of the slot 19 inthe connecting rod to open the valve 27, admitting gas from the tank 20above the carbureter in amount controlled by the needle valve 25,thereby materially augmenting the power of the motor.

From the foregoing it will be seen that a simple device for this purposehas been disclosed in the preferred form of its embodiment, but it isnot desired to restrict the details to the exact construction shown, itbeing obvious that changes, not involving the exercise of invention, maybe made without conflicting with the scope of the appended claims.

'Having thus described the invention, what is claimed as new and desiredto secure by Letters Patent, is:-

1. In an internal explosion motor having a carbureter connected with anintake passage to use gasoline as a fuel, an independent tank for gas,means to connect said tank to the connection between said carbureter andintake passage, a manually operable valve in said connections, a pedallyactuated valve controlling the fiow of gas from said connections to saidcarbureter, and a spring pressed relief valve for said tank.

2. In an internal explosion motor having a carbureter connected with anintake passage to use gasoline as a fuel, a valve in said connections, afoot lever to operate said valve, a tank having means to generate gas, aconnection between said tank and the connection between said carbureterand intake passage, a valve in the last named connection, and meansoperated by said foot lever to actuate the last named valve in sequenceto the first named valve.

3. In an internal motor having a carburetor DIETRICH GRABBE.

